code: def test_run_with_txt_files(self, test_files_path):
      component = TikaDocumentConverter()
      output = component.run(
          sources=[
              test_files_path / "txt" / "doc_1.txt",
              test_files_path / "txt" / "doc_2.txt",
          ]
      )
      documents = output["documents"]
      assert len(documents) == 2
      assert (
          "Some text for testing.\nTwo lines in here."
          in documents[0].content
      )
      assert (
          "This is a test line.\n123 456 789\n987 654 321"
          in documents[1].content
      )
  
file_path: haystack/test/components/converters/test_tika_doc_converter.py
imports: from unittest.mock import patch
  import pytest
  from haystack.dataclasses import ByteStream
  from haystack.components.converters.tika import TikaDocumentConverter
label_desc: Use image node_id 4 for calling the TestTikaDocumentConverter obj's underlying member method code with example usage: obj.test_run_with_txt_files(test_files_path) without return types